It seems to be a hack, but this time it has been reworked perfectly.

We have the original - it does not restrict movement, however - in the hack we have looked at everything for platformer levels: “Climb stairs”, “Do not go into empty borders”, “walk on lined platforms”, “block shots with walls”.

The graphical shell has changed noticeably. Now it looks like we are walking “inside a room, building, etc.” and various enemies are against us.

I spent about a day behind this hack, I really liked it and therefore, “Try to play it yourself. Perhaps - you will also love this hack”